Floor-scraper.



Nq.'a53,446. BATENTED MAY I4, 1907.' B. o. Fox.

FLGOR SGRAPER.

Anmmlmon FILED 110121.11106.

UNITED snags PATENT OFFICE.

FLOOR-SCRAPER.

Specification of Letters fatent.

Patented May 14, 1907.

Application tiled November 21, 1906. Serial No. 344,407.

To a/Z/ whom it may concern:

Be it known that I, BENJAMIN O. Fox, a citizen of the United States,residing at Milwaukee, in the county of Milwaukee, Statev of Wisconsin,have invented a new and useful Improvement in Floor-Scrapers, of whichthe following is a specification.

My invention has for its object to provide an easily manipulated floorscraper and it consists of the combination of parts hereinafter setforth, and subsequently claimed.

In the drawings, Figure l is a top-view of my device, Fig. 2 is alongitudinal sectional view with parts broken away, Fig. 3 is a reducedmodified form with parts broken away showing the two forward rollers inclose proximity to each other, Fig. 4 is a top view of the knifeshowingrounding corners and Fig. 5 is an end view of a spring clamp plate.

Referring by reference letters to the igures: A is a frame preferablycast in one piece of iron and having bifurcated mem-l bers and its frontend arranged on an angle. Secured to the front end of frame A by meansof bolt screws a, is a round cornered knife A and a clamp plate A2, thecutting edge of said knife extends beneath the lower edge of frame A andis provided with elongated cut out parts a allowing for theperpendicular adjustment of knife A. Clamp plate A2 is made of ,springmetal and is concave in form so that a pressure is constantly exerted onknife A near its cutting edge.

Permanently secured between the bifurcated members of frame A is an axleB which forms a bearing for two supporting rollers B and B2. Said axlesbeing provided with collars b for the purpose of keeping said rollers inplace. Rollers B and B2 are also provided with rubber tires b to preventslipping and to make them noiseless when in operation, and said rollersare preferably arranged in close proximity to each other as shown inFig. 3 of the drawings and for the reason hereinafter set forth.

In the rear of axle B and connecting the bifurcated parts of 'frame A isanother axle C which forms a bearing for another roller C1. Said axlebeing provided with collars b and said roller is provided with av rubbertire b as in the case of the former axle and rollers. Axle B is arrangedto be near the center of weight of my machine and when it is at normal,practically all the weight of my device rests on rollers B and B2.However,

a small weight rests on roller C leaving the cutting edge of knife Aclear of the surface to be operated upon.

A very serious objection to floor Scrapers has been that the weight ofthe machine, a certain amount of which is necessary to hold the kniferigid on the floor, is most all in the supporting roller or rollers,thus making the machine clumsy and taking extra power tooperate it. Thisobjection I have overcome in my device having made my roller light andthe frame heavy. It will also be observed that have provided threerollers, larger in diameter than would ordinarily be used in machines ofthis character, one of which is arranged considerably in the rear of theother two. By this arrangement the machine may be readily moved fromside to side with ease and without lifting the machine bodily froin thefloor as has heretofore been necessary. This side motion is aecomplishedby grasping the handle E which is pivotally secured to the back end offrame A, and tipping the machine so that the weight rests first on thetwo front rollers and then on the back roller, and at the same timegiving the handle a side motion.

The object of having the corners of the knife rounded, and the twoforward rollers in close proximity to each other as shown in Fig. 3 isto enable the machine to be tipped upon one side or the other so thatthe knife is brought into service. This feature is essential in scrapingthe floor close to a wall or in the corners of a room.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

l. In a floor scraper, a frame having bifurcated parts, two axlespermanently connecting said 'bifurcated parts, two rollers for one ofsaid axles, another roller for the other said axle, the latter rollerarranged centrally of and a predetermined distance in the rear of said.former rollers, the combined weight of said rollers being less than thatof said frame, a knife adjustably secured to the front end of said frameand handle pivotally secured to the back end of said frame substantiallyas set forth.

2. In a .floor scraper, a bifurcated frame, two axles supported by andconnecting the bifurcated parts of said frame, two rollers for one ofsaid axles arranged in close proximity to each other, another roller forsaid IOO othor axle arranged cont/rally o'l? and in. the 'rom' oll.miciv two rolIoI-s, :L :Vouml oo'mor'od kn'f'o a-dmytod izo bofuljustnbly scoured to tho front ond ol" said, 'Fr-ann'lo, :L springclump,

'plato adopted Lo oxo/rt :L constant pressure on said knife nom' itscutting' odge :und a handle subst/m1 tlally no sot forth.

In testimony Wl'lorool. I vhavo signed. my nznno to this Specificationin tho m'osonoo of two subscribing Witnossos.

BENJAMIN O. FOX.

Witn assos z Gr. 11. GOTTSOIMLK, J. E. DEAKIN,

